14- Qsi Develop a formula for finding the time Constant of the liquid-level system shown in figure below. The average operating level is h The resistance R is linear. The tank has three verticle 'walls and one which slope at an angle fx) from the vertical wall as Shown in The fig. The distance separating theparallel walls is i of te B R

PROBLEM BACKGROUND The most common heat exchanger used in industry is a 'shell-and-tube' heat exchanger as illustrated in the figure. One fluid is fed into a set of tubes around which a second fluid is circulated. In the example shown, complex flow patterns illustrated by arrows show the flow may be partially parallel flow and partially crossflow. PROBLEM STATEMENT For this problem, we will consider a single tube in a crossflow configuration as shown. Air is to be heated to the desired temperature to feed a bioreactor. The air is feed flows normal to the outside of the center tube. Saturated steam is flows through the inside of the tube to provide the heat. The air is being fed at an average velocity of 15 m/s though the outer pipe of the heat exchanger at 27 °C and 1 atm. It heated by using saturated steam which condenses at 107°C over the surface of the inner tube. The tube is 5 m long with an outer diameter of 0.015 m and an inner diameter of 0.014 m. For simplicity in answering…

According to nature of flow, convective heat transfer is classified into natural convection and forced convection. By taking specific examples, explain how the natural convection and forced convection arises in them.